Edition 1.0 2020-04 INTERNATIONAL ... - iTeh Standards Store

IEC 63132-3 Edition 1.0 2020-04

INTERNATIONAL STANDARD NORME INTERNATIONALE

Guidance for installation procedures and tolerances of hydroelectric machines – Part 3: Vertical Francis turbines or pump-turbines Lignes directrices des procédures et tolérances d’installation des machines hydroélectriques – Partie 3: Turbines ou pompe-turbines Francis verticales

IEC

631

32-3

:202

0-04

(en-

fr)

®

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IEC 63132-3:2020https://standards.iteh.ai/catalog/standards/sist/508b3756-1238-4cd9-bc83-

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 27.140

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IEC 63132-3 Edition 1.0 2020-04

INTERNATIONAL STANDARD NORME INTERNATIONALE

Guidance for installation procedures and tolerances of hydroelectric machines – Part 3: Vertical Francis turbines or pump-turbines Lignes directrices des procédures et tolérances d’installation des machines hydroélectriques – Partie 3: Turbines ou pompe-turbines Francis verticales



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– 2 – IEC 63132-3:2020 IEC 2020

CONTENTS

FOREWORD ........................................................................................................................... 4 1 Scope .............................................................................................................................. 6 2 Normative references ...................................................................................................... 6 3 Terms and definitions ...................................................................................................... 6 4 Installation flowchart ........................................................................................................ 6

4.1 Turbine embedded parts ......................................................................................... 6 4.2 Turbine mechanical parts ........................................................................................ 8

5 Steps ............................................................................................................................. 10 5.1 Turbine embedded parts ....................................................................................... 10

5.1.1 Step 1: Benchmarks set-up ............................................................................ 10 5.1.2 Step 2: Primary embedded pipes and draft tube liner foundation

installation ..................................................................................................... 10 5.1.3 Step 3: Draft tube liner foundation embedment .............................................. 10 5.1.4 Step 4: Draft tube liner foundation and workspace verification ....................... 11 5.1.5 Step 5: Handing over to installation ............................................................... 11 5.1.6 Step 6: Draft tube liner supports installation .................................................. 11 5.1.7 Step 7: Draft tube liner installation ................................................................. 12 5.1.8 Step 8: Secondary embedded pipes installation around the draft tube

liner ............................................................................................................... 14 5.1.9 Step 9: Handing over to concreting phase...................................................... 14 5.1.10 Step 10: Draft tube liner embedment ............................................................. 15 5.1.11 Step 11: Concrete voids testing ..................................................................... 15 5.1.12 Step 12: Draft tube liner grout injection .......................................................... 16 5.1.13 Step 13: Handing over to installation ............................................................. 16 5.1.14 Step 14: Draft tube liner dimensional inspection after embedment ................. 16 5.1.15 Step 15: Stay ring and spiral case supports installation ................................. 17 5.1.16 Step 16: Stay ring installation ........................................................................ 17 5.1.17 Step 17: Spiral case installation ..................................................................... 18 5.1.18 Step 18: Pit liner(s) and/or servomotor base plates installation ...................... 20 5.1.19 Step 19: Secondary embedded pipes installation around the spiral case ........ 21 5.1.20 Step 20: Spiral case pressure test ................................................................. 21 5.1.21 Step 21: Handing over to concreting phase .................................................... 22 5.1.22 Step 22: Embedment up to generator floor ..................................................... 22 5.1.23 Step 23: Remaining turbine embedded parts grout injection ........................... 22 5.1.24 Step 24: Handing over to installation ............................................................. 23 5.1.25 Step 25: Spiral case dimensional inspection after concreting ......................... 23 5.1.26 Step 26: Corrosion protection for embedded parts ......................................... 23 5.1.27 Step 27: Turbine embedded parts complete ................................................... 23 5.1.28 Step 28: Turbine mechanical parts installation ............................................... 24

5.2 Turbine mechanical parts ...................................................................................... 24 5.2.1 Step 1: Turbine embedded parts complete ..................................................... 24 5.2.2 Step 2: Stay ring machining (if required) ........................................................ 24 5.2.3 Step 3: Draft tube cone(s) installation ............................................................ 24 5.2.4 Step 4: Bottom ring installation ...................................................................... 24 5.2.5 Step 5: Turbine runner installation ................................................................. 26 5.2.6 Step 6: Turbine shaft installation ................................................................... 26 5.2.7 Step 7: Turbine runner and shaft coupling ..................................................... 27



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IEC 63132-3:2020 IEC 2020 – 3 –

5.2.8 Step 8: Guide vane installation ...................................................................... 27 5.2.9 Step 9: Head cover installation ...................................................................... 27 5.2.10 Step 10: Shaft seal housing assembly ........................................................... 29 5.2.11 Step 11: Guide bearing housing assembly ..................................................... 29 5.2.12 Step 12: Regulating ring installation .............................................................. 29 5.2.13 Step 13: Servomotors installation .................................................................. 29 5.2.14 Step 14: Guide vane links and levers installation ........................................... 30 5.2.15 Step 15: Turbine shaft free ............................................................................ 30 5.2.16 Step 16: Generator installation ...................................................................... 31 5.2.17 Step 17: Turbine and generator shafts coupling ............................................. 31 5.2.18 Step 18: Unit alignment ................................................................................. 32 5.2.19 Step 19: Shaft seal final installation ............................................................... 33 5.2.20 Step 20: Turbine guide bearing assembly and adjustment ............................. 33 5.2.21 Step 21: Guide vane apparatus final adjustment ............................................ 34 5.2.22 Step 22: Remaining turbine parts installation completion ............................... 34 5.2.23 Step 23: Cleaning, painting and inspection before initial tests ........................ 34 5.2.24 Step 24: Turbine mechanical parts complete .................................................. 34 5.2.25 Step 25: Commissioning ................................................................................ 34

Bibliography .......................................................................................................................... 35 Figure 1 – Generic installation flowchart – Francis turbine or pumped-turbine embedded parts ...................................................................................................................... 7 Figure 2 – Generic installation flowchart – Francis turbine or pumped-turbine mechanical parts ................................................................................................................... 10 Figure 3 – Draft tube liner installation ................................................................................... 13 Figure 4 – Draft tube liner embedment plan .......................................................................... 15 Figure 5 – Stay ring installation ............................................................................................. 18 Figure 6 – Spiral case installation ......................................................................................... 20 Figure 7 – Bottom ring installation ......................................................................................... 26 Figure 8 – Head cover installation ......................................................................................... 28 Figure 9 – Turbine shaft free ................................................................................................. 31 Table 1 – Concentricity and junction ..................................................................................... 14 Table 2 – Elevation, level and pararellism ............................................................................. 19 Table 3 – Circularity and level ............................................................................................... 25 Table 4 – Circularity and concentricity .................................................................................. 28 Table 5 – Runner concentricity, level and elevation .............................................................. 30 Table 6 – Runner measurements .......................................................................................... 32 Table 7 – Shaft measurements ............................................................................................. 33



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– 4 – IEC 63132-3:2020 IEC 2020

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________

GUIDANCE FOR INSTALLATION PROCEDURES

AND TOLERANCES OF HYDROELECTRIC MACHINES –

Part 3: Vertical Francis turbines or pump-turbines

FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 63132-3 has been prepared by IEC technical committee 4: Hydraulic turbines.

The text of this International Standard is based on the following documents:

FDIS Report on voting

4/382/FDIS 4/392/RVD

Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 63132 series, published under the general title Guidance for installation procedures and tolerances of hydroelectric machines, can be found on the IEC website.



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IEC 63132-3:2020 IEC 2020 – 5 –

The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific document. At this date, the document will be

• reconfirmed,

• withdrawn,

• replaced by a revised edition, or

• amended.



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GUIDANCE FOR INSTALLATION PROCEDURES AND TOLERANCES OF HYDROELECTRIC MACHINES –

Part 3: Vertical Francis turbines or pump-turbines

1 Scope

The purpose of this this part of IEC 63132 is to establish, in a general way, suitable procedures and tolerances for the installation of a vertical Francis turbine or pump-turbine. This document presents a typical assembly and whenever the word “turbine” is used in this document, it refers to a vertical Francis turbine or a pump-turbine. There are many possible ways to assemble a unit. The size of the machine, design of the machine, layout of the powerhouse or delivery schedule of the components are some of the elements that could result in additional steps, the elimination of some steps and/or assembly sequences.

It is understood that a publication of this type will be binding only if, and to the extent that, both contracting parties have agreed upon it.

This document excludes matters of purely commercial interest, except those inextricably bound up with the conduct of installation.

The tolerances in this document have been established upon best practices and experience, although it is recognized that other standards specify different tolerances.

Wherever this document specifies that documents, drawings or information is supplied by a manufacturer (or by manufacturers), each individual manufacturer will furnish the appropriate information for their own supply only.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/

• ISO Online browsing platform: available at http://www.iso.org/obp

4 Installation flowchart

4.1 Turbine embedded parts

Figure 1 shows a generic installation flowchart for Francis turbine or pumped-turbine embedded parts.



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IEC 63132-3:2020 IEC 2020 – 7 –

Benchmarks set-up

Primary embedded pipes and draft tube liner foundations installation

Draft tube liner foundations embedment

1

2

3

Draft tube liner foundations and workspace verification4

Handing over to installation5

Draft tube liner supports installat ion6

Draft tube liner installation7

Secondary embedded pipes installation around the draft tube liner8

Handing over to concreting phase9

Draft tube liner embedment10

Concrete voids testing11

Draft tube liner grout injection12


Draft tube liner dimensional inspection after embedment14

Stay ring and spiral case supports installation15

Stay ring installation16

Spiral case installation17

Pit liner(s) installation and/or servomotor base plates installation18

Secondary embedded pipes installation around spiral case19

Spiral case pressure test20

Handing over to concreting phase21

Embedment up to generator floor22

Remaining turbine embedded parts grout injection23


Spiral case dimensional inspection after concreting25

Corrosion protection of embedded parts26

Turbine embedded parts complete27

Turbine mechanical parts installation28

Standard tasks

Important milestones

Joint effort of turbine and generator

Current flowchart product installation complete

Reference to other f lowcharts or activit ies

IEC

Figure 1 – Generic installation flowchart – Francis turbine or pumped-turbine embedded parts



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– 8 – IEC 63132-3:2020 IEC 2020

4.2 Turbine mechanical parts

Figure 2 shows a generic installation flowchart for Francis turbine or pumped-turbine mechanical parts.



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IEC 63132-3:2020 IEC 2020 – 9 –

Draft tube cone(s) installation

1

2

3

Bottom ring installation4

Turbine runner installation5

Turbine shaft installation6

Turbine runner and shaft coupling7

Guide vanes installation8

Head cover installation9

Shaft seal housing assembly10

Guide bearing housing assembly11

Regulat ing ring installation12

Servomotors installat ion13

Guide vane links and levers installat ion14

Turbine shaft free15

16

17

18

Shaft seal final installation19

Turbine guide bearing assembly and adjustment20

Guide vane apparatus final adjustment21

Remaining turbine parts installation completion22

Standard tasks

Important milestones

Joint effort to turbine and generator

Current flowchart product installation complete

Reference to other f lowcharts or activit ies

Turbine mechanical parts complete

Stay ring machining

Generator installation

Turbine and generator shafts coupling

Unit alignment

Cleaning, painting and inspection before initial tests23

Turbine machanical parts complete24

25 Commissioning

IEC

NOTE The generator installation is linked to the turbine installation.



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– 10 – IEC 63132-3:2020 IEC 2020

Figure 2 – Generic installation flowchart – Francis turbine or pumped-turbine mechanical parts

5 Steps

5.1 Turbine embedded parts

5.1.1 Step 1: Benchmarks set-up a) Objective of work in the step

– Set-up benchmarks to be used for starting proper installation of the turbine. b) Explanation of work

– Sufficient benchmarks should be provided to establish the unit centreline, axis and elevation.

c) Recommendations N/A

d) Additional information Depending on the project delivery system (EPC, design build, etc.), the benchmarks or their reference points could be provided by the owner, civil contractor, etc. Whoever provides the benchmarks or reference points is responsible to make sure they are correct. The benchmark type (x, y, z coordinates, defining axis and elevations, etc.) should be agreed to prior to the work commencing. The turbine supplier/intaller should take care to transfer the necessary benchmarks throughout the installation and/or concreting processes so that the benchmarks remain accessible as the unit is assembled.

5.1.2 Step 2: Primary embedded pipes and draft tube liner foundation installation a) Objective of work in the step

– Install the primary embedded pipes and steel foundations in the correct locations. b) Explanation of work

– Install the primary embedded pipes and supporting systems. – Install the foundation components of the draft tube liner.

c) Recommendations Different designs require different tolerances; therefore, it is recommended that the turbine supplier should provide the tolerances. It is considered as a best practice to perform: – NDT as applicable (i.e. visual inspections, pressure tests of the piping, test of welding

seams); – measures to prevent the concrete from entering the pipes or contaminating the machined

surfaces of foundations during concreting. d) Additional information

The contract should define which party is responsible to install the primary embedded pipes and/or the draft tube liner foundation components.

5.1.3 Step 3: Draft tube liner foundation embedment a) Objective of work in the step

– Embed the foundation components of the draft tube liner and the primary embedded piping in the concrete.

b) Explanation of work – Embed the foundation components of the draft tube liner.

c) Recommendations



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IEC 63132-3:2020 IEC 2020 – 11 –

Care should be taken not to damage any of the embedded components or piping when pouring concrete.

d) Additional information N/A

5.1.4 Step 4: Draft tube liner foundation and workspace verification a) Objective of work in the step

– Confirm that the draft tube liner foundations have been installed in the correct place, verifying that the draft tube pit for placing the draft tube liner is per the design and there is sufficient access to the workplace.

b) Explanation of work – Ensure that the dimensions of the draft tube pit match the design. – Ensure that there will be no interference between the concrete structures, the reinforcing

steels, the scaffolding, etc., the foundation anchors, the embedded pipes and the draft tube liner.

Once the workplace is acceptable the turbine installation work can start. c) Recommendations

Check that the foundation components of the draft tube liner and the primary embedded pipes were installed within the tolerances provided by the turbine supplier.


5.1.5 Step 5: Handing over to installation a) Objective of work in the step

– Transfer the work space to the turbine supplier/installer. b) Explanation of work

– There is normally an official transfer of the working area of the draft tube from the civil contractor to the turbine supplier/installer. Typically, the transfer is documented with some types of signed form.

c) Recommendations N/A


5.1.6 Step 6: Draft tube liner supports installation a) Objective of work in the step

– Install the draft tube liner supports. b) Explanation of work

– Install the supports and installation devices (if required) for fixing the draft tube liner to the base plates.

c) Recommendations The following items should be checked: – NDT of the site welded portion of supports (if applicable); – dimensional checks of supports.



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d) Additional information In some cases, it will be advantageous for the civil contractor to be able to store the reinforcement steel that will be installed in the draft tube and/or around the draft tube. It can be significantly easier to move the reinforcement steel into this area prior to installation of the draft tube liner. If this is the case, it should be discussed and agreed between parties.

5.1.7 Step 7: Draft tube liner installation a) Objective of work in the step

– Install the draft tube liner (see Figure 3). b) Explanation of work

– Transport the draft tube liner segments to the foundation and placing them on the supports.

– Tack-weld of the draft tube liner segments. – Inspect the alignment and principal dimensions of the draft tube liner before welding. – Weld the draft tube liner. – Inspect the alignment and principal dimensions of the draft tube liner after welding.

c) Recommendations – The following items should be checked:

• NDT of the welding seams;

• the junction, concentricity of inlet, elevation, level, inclination (if required) and principal dimensions of the draft tube liner should be checked and be within the tolerances listed in Step 9: Handing over to concreting phase;

• proper fixation of the draft tube liner. d) Additional information

The sequence for the installation of the draft tube liner should be provided by the turbine supplier. See Figure 3. In some designs, steel pier nose(s) are required and will be installed in this step. If the downstream concrete portion of the draft tube cannot be completed prior to the installation of the draft tube liner, the outlet position of the draft tube liner cannot be determined by the junction method. Therefore, another method will be required to position the outlet of draft tube liner. The downstream concrete portion would then be adapted to the draft tube liner outlet. Adequate supports or bracing are required to prevent the draft tube liner from moving or changing shape during placing of the secondary concrete.



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IEC 63132-3:2020 IEC 2020 – 13 –

Figure 3 – Draft tube liner installation

Elevation, level and flatness in line Radial readings on

draft tube cone inlet

Theoretical unit axis

L (Axial distance between steel and concrete)

Junc

tion

betw

een

stee

l lin

er a

nd c

oncr

ete

IEC

Theoretical unit axis

Elevation, level and flatness in line

Radial readings on draft tube cone inlet

L (Axial distance between steel and concrete)

Junction between steel liner and concrete



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Edition 1.0 2020-04 INTERNATIONAL ... - iTeh Standards Store

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